A man carries a load on his head through distance of 5m . the maximum amount of work done when he.

Move it over an inclined plane

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Moves it over a horizontal surface

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moves in vertically upward direction

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None of these

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Solution

The correct option is B moves in vertically upward direction
Work, $W = F d c o s θ$
where $d =$ displacement along with the applied force
$F =$ applied force
$θ =$ angle between the applied force and the direction of displacement
For the maximum amount of work, $θ = 180$
$c o s 180^{0} = | - 1 | = 1$
loads move vertically upward.
The correct option is C.

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